|
Teflon® PFA 350T
全氟烷氧基
DuPont Fluoropolymers
產品說明
Applications for Teflon ® PFA 350 T include extruded tubing or hose for handling aggressive fluids at high pressures; chemical linings for pipes, valves and fittings used in the chemical processing industries; film for high flex service; traditional extruded or moulded articles requiring the unique performance of Teflon ® PFA 350 T.
Teflon ® PFA 350 T is a premium resin available in clear 2,5 mm pellets. This resin is a chemically modified form of Teflon ® PFA 350 that combines many of the benefits of the parent resin with several new ones. The additional benefits are improved colour, improved thermal stability and better mould release characteristics. Similar to Teflon ® PFA 350, this resin has a relatively low melt flow rate, high flex life and enhanced resistance to environmental stress cracking, compared to most other grades of Teflon ® PFA.
These additional benefits make PFA 350 T an ideal resin in applications like transfer moulding where the resin is exposed to high temperatures and long hold-up times.
Teflon ® PFA 350 T, like its parent resin PFA 350, is preferred when extended service is required in hostile environments involving chemical, thermal and mechanical stress. Compared to other fluoropolymers, its creep resistance at high service temperature provides a superior balance and level of end use properties.
Properly processed products made from virgin Teflon ® PFA 350 T resin provides the superior properties typical of the fluoropolymer resins: retention of physical properties after service at 260°C, useful properties at -196°C and chemical inertness to nearly all industrial chemicals and solvents. Dielectric properties are excellent. Moulded products have moderate stiffness and high ultimate elongation.
In a flame situation, products made of Teflon ® PFA 350 T resist ignition and do not themselves pro-
mote flame spread. When ignited by flame from other sources, the contribution of heat is very small and added at a slow rate with very little smoke. Teflon ® PFA 350 T meets the requirements of ASTM D 3307, type II.
總體
材料狀態(tài) • 已商用：當前有效
供貨地區(qū) • 北美洲 • 歐洲
• 南美洲 • 亞太地區(qū)
• 剛性，良好 • 良好的著色性 • 脫模性能良好
• 高 ESCR（抗應力裂紋） • 流動性低
性能特點 • 抗溶解性 • 耐化學性良好 • 煙釋放，低
• 良好的抗蠕變性 • 耐氣候影響性能良好 • 延展性，高
• 良好的熔體強度 • 熱穩(wěn)定性，良好
用途 • 襯里 • 管道 • 零件裝置
• 閥門/閥門部件 • 管道
機構評級 • ASTM D 3307 Type II
外觀 • 清晰/透明
形式 • 顆粒料
加工方法 • 吹塑成型 • 樹脂傳遞成型 • 注射成型
• 擠出 • 壓縮模塑
物理性能 額定值單位制 測試方法
比重 2.12 到 2.17g/cm³ ASTM D792
ISO 1183
熔流率 (372°C/5.0 kg) 2.0g/10 min ASTM D1238
ISO 1133
吸水率 (24 hr) < 0.030% ASTM D570
機械性能 額定值單位制 測試方法
抗張強度 ASTM D638
屈服, 23°C 15.2MPa ISO 527-2
斷裂, 23°C 28.0MPa
斷裂, 250°C 14.0MPa
伸長率 ASTM D638
斷裂, 23°C 300% ISO 527-2
斷裂, 250°C 500%
彎曲模量 ASTM D790
23°C 625MPa ISO 178
250°C 69.0MPa
1 / 2
Teflon® PFA 350T 2012年9月30日
全氟烷氧基
DuPont Fluoropolymers
硬度 額定值單位制 測試方法
硬度計硬度 (邵氏 D) 55 ASTM D2240
ISO 868
熱性能 額定值單位制 測試方法
最高連續(xù)使用溫度 260°C
熔融峰值溫度 302 到 310°C ASTM D4591
ASTM D3418
線形膨脹系數(shù) - 流動 ASTM D696
21 到 100°C 0.00014cm/cm/°C
100 到 150°C 0.00018cm/cm/°C
150 到 208°C 0.00022cm/cm/°C
電氣性能 額定值單位制 測試方法
體積電阻率 > 1.0E+16ohm•cm ASTM D257
IEC 60093
介電強度
0.250 mm 2 > 80kV/mm ASTM D149
0.250 mm 3 > 80kV/mm IEC 60243-1
相對電容率
60 Hz 2.03 ASTM D150
IEC 60250
1 MHz 2.03 IEC 60250
ASTM D150
耗散因數(shù) ASTM D150
60 Hz 0.00010 IEC 60250
1 MHz 0.00010
可燃性 額定值單位制 測試方法
極限氧指數(shù) > 95% ASTM D2863
ISO 4589-2
補充信息 額定值單位制 測試方法
MIT Folding Endurance (180.0 到 200.0 µm) 2.0E+5Cycles ASTM D2176
注射 額定值單位制
螺桿長徑比 24.0:1.0
備注
1 一般屬性：這些不能被視為規(guī)格。
2 方法A（短時間）
3 Short-time
|
